Abstract: Manufacturing process of a stone providing for the following steps: positioning a die and a base platform under punches of a press, filling cavities of the die with a sand layer, placing a tube on the sand, actuating the actuation means to actuate the punches from the idle position to the operating position so that each punch presses the tube in the sand and presses the sand in the cavities of the die, actuating the actuation means to raise the punches, placing the stones in a drying station, extracting the solidified sand inside the tube from each stone, and placing a lighting device in the tube.

Abstract: A medical hollow needle structured in accordance with the present invention, wherein the puncture resistance of a blade surface over the entire length in the puncture direction can be made substantially equal, and the patient's pain during needle puncture can be relieved due to a reduction in the peak level of puncture pain with the duration of sensory awareness of the puncture pain shortened by the use of the blade surface in a novel shape employing, in combination with each other, first to fourth inclined surfaces having specific inclination directions. Accordingly, the present invention provides a medical hollow needle with a blade surface in a novel shape whereby the puncture pain can be further reduced compared to needles with a conventional structure, and to provide a preferred method of producing such a medical hollow needle.

Abstract: The nozzle member of a fluid nozzle includes at least one through hole that is parallel to a center axis, wherein a diameter dimension of the through hole is 10 ?m to 100 ?m, a length-to-diameter ratio (L/D) of the through hole is 5 or above, and the nozzle member is formed of ceramics having relative density of 95% or above. The nozzle member including a plurality of minute through holes is manufactured by performing extrusion or cast molding in such a way that a molded body includes a filament of synthetic resin, carbon, or metal in a direction of the center axis of the molded body, and then defatting/sintering the molded body after removing the filament or, when the filament is formed of synthetic resin or carbon, defatting/sintering the molded body under oxidizing atmosphere to evaporate and remove the filament without removing the filament from the molded body.

Abstract: A hermetic feedthrough for an implantable medical device includes an insulator body and a ferrule. The insulator body includes ceramic material and one or more electrically conductive conduits extending through the insulator body. The insulator is disposed in an opening of the ferrule. The insulator body includes a plurality of substantially flat surfaces that each include a plurality of edges. A rounded corner extends between adjacent edges of any two adjacent substantially flat surfaces. Each corner between any two adjacent substantially flat surfaces that face toward the ferrule has an average radius that is less than approximately 25% of a length of the corresponding edges.

Abstract: Methods for threading ceramic materials, such as ceramic materials used for spinal implants or other biomedical implants. In some implementations, an expected rate of shrinkage of the block upon undergoing a firing process may be determined. A scaling factor may then be applied using the expected rate of shrinkage to select a tap having a size larger than a desired thread size. A green block may then be tapped with the selected tap to form a threaded opening in the green block. The block may be machined in order to remove cracks caused by the tapping process and/or to form the block into a desired shape/size. The green block may then be fired, which may result in a reduction of a size of the block and a size of the threaded opening.

Abstract: A method for producing an artificial bone capable of accurate molding at a joined part with appropriate strength, in which electromagnetic waves or electron beams are irradiated to a layer of at least type of powder selected from metal biomaterials, ceramics for the artificial bone and plastic resins for the artificial bone based on image data corresponding to a shape of the artificial bone, thereby effecting sintering or melting, and the thus sintered layer or melted and solidified layer is laminated, such that a surface finish step is adopted that inner faces and/or outer faces of both ends and their vicinities configuring the joined part to a human bone part are polished by a rotating tool based on the image data and also irradiation of electromagnetic waves or electron beams at both ends and their vicinities constituting the joined part is set greater than that at other regions.

Abstract: A riser for an archery bow is formed from a fibrous composite material, the matrix of which may be a high heat distortion thermoplastic polymer, a very high heat distortion thermoplastic polymer, or a combination thereof. The riser may incorporate a spine formed from a different polymer or composite than the rest of the riser, or from metal. A method for producing a riser for an archery bow includes the steps of introducing a polymeric composite into a mold from a first end of said mold to facilitate a particular orientation of components of said polymeric composite, molding the polymeric composite to produce a billet that approximates a net shape of the riser, and then machining the billet to the final shape of the riser.

Abstract: A secondary battery includes: a cathode including an active material; an anode; and an electrolytic solution. The active material has a composition represented by Formula (1) described below. A median diameter (D90) of the active material is from about 10.5 micrometers to about 60 micrometers both inclusive, the median diameter (D90) being measured by a laser diffraction method. A half bandwidth (2?) of a diffraction peak corresponding to a (020) crystal plane of the active material is from about 0.15 degrees to about 0.24 degrees both inclusive, the half bandwidth (2?) being measured by an X-ray diffraction method. LiaMnbFecMdPO4??(1) where M represents one or more of Mg, Ni, Co, Al, W, Nb, Ti, Si, Cr, Cu, and Zn; and 0<a?2, 0<b<1, 0<c<1, 0?d<1, and b+c+d=1 are established.

Abstract: The invention relates to a method (1) for fabricating a matt ceramic part (13, 14, 15, 17, 19) comprising the following steps: a) fabricating (2) a ceramic part; b) sand blasting (7) portions of the ceramic part to make them matt; According to the invention, the method includes the following final step: c) lapping (9) the matt portions in order to level out the surface of the matt portions. The invention concerns the field of timepieces.

Abstract: Provided are aluminum titanate capable of providing a sintered body having a low coefficient of thermal expansion, a high porosity, and high mechanical strength, a production method of the same, and a sintered body of the columnar aluminum titanate. The columnar aluminum titanate has an average aspect ratio (=(number average major-axis length)/(number average minor-axis length)) of 1.5 or more and its magnesium content is preferably within the range of 0.5% to 2.0% by weight relative to the total amount of titanium and aluminum in terms of their respective oxides.

Abstract: The invention relates to a granulated powder intended, in particular, for the production of ceramic sintered parts, said powder having the following chemical weight composition, based on dry matter, namely: a zirconia stabiliser selected from the group containing Y2O3, Sc2O3, MgO, CaO, CeO2, and mixtures thereof, the weight content of stabiliser, based on the total zirconia and stabiliser content, being between 2% and 20% and the MgO+CaO content being less than 5% based on the total zirconia and stabiliser content; at least 1% of a first binder having a glass transition temperature less than or equal to 25° C.; 0-4% of an additional binder having a glass transition temperature greater than 25° C.; 5-50% alumina; 0-4% of a temporary additive different from the first binder and the additional binder, the total content of the first binder, the additional binder and the temporary additive being less than 9%; less than 2% impurities; and ZrO2 to make up 100%.

Abstract: A method of preparing a green-ceramic pigment for reduction firing using copper oxide that includes mixing tin oxide (SnO2) and copper oxide (CuO); providing a fired product by applying oxidation firing to the mixture at a firing temperature of 1000 to 1300° C.; and grinding the fired product. Aspects also provide a green-ceramic pigment prepared by this method, as well as a method of manufacturing a green ceramic.

Abstract: A method for manufacturing a ceramic product without a sintering process, which requires no removal of binder to ensure favorable brittle fracture resistance of the ceramic product. The method includes mixing a ceramic powder with an additive and a binder to prepare a ceramic powder mixture, and treating the ceramic powder mixture through vacuum vibration pressing, to thereby form a ceramic product. The ceramic powder may include a fused ceramic powder prepared by heating the ceramic material to a melting point of the ceramic material or higher to fuse the same, cooling the fused material, and milling the cooled material.

Abstract: The invention relates to a granulated powder intended, in particular, for the production of ceramic sintered parts, said powder having the following chemical weight composition, based on dry matter, namely: at least 1% of a first binder having a glass transition temperature less than or equal to 25° C.; 0-4% of an additional binder having a glass transition temperature greater than 25° C.; 0-4% of a temporary additive different from the first binder and the additional binder, the total content of the first binder, the additional binder and the temporary additive being less than 9%; 0-15% of an additive for sintering the ceramic material; at least 2% impurities; and the remainder comprising a ceramic material, and optionally an agent for stabilising said ceramic material, to make up 100%. According to the invention, the median diameter D50 of the powder is between 80 and 130 ?m, the percentile D99.5 is less than 500 gm and the relative density of the granules is between 30% and 60%.

Abstract: The invention describes a sputtering target comprising a ceramic body having tin oxide as a major constituent and between 0.5 and 15 wt % of at least two other oxides, one of which being antimony oxide, the target having a density of at least 90%, and preferably at least 95%, of the theoretical density (TD) and an electrical resistivity of less than 50 Ohm·cm, and the target having a planar or rotary configuration with a sputtering area of at least 10 cm2, and preferably at least 20 cm2. Also described is a process for manufacturing this sputtering target according comprising the steps of: —providing for a slurry comprising tin oxide and said at least two other oxides, —shaping of a green body from said slurry, and drying said green body, —firing of said green body at a temperature between 1050 and 1250° C., thereby obtaining a pre-shaped target, and —grinding of said pre-shaped target to its final dimensions.

Abstract: Earth-boring casing shoes include a crown configured for at least one of drilling and reaming a wellbore when the crown is attached to a section of casing and the casing is advanced into a wellbore. The crown includes a body comprising a corrodible composite material, and at least one cutting structure carried on the body. The casing shoes further include connection structure configured for attachment to a section of casing. Methods are used to form such casing shoes, and such casing shoes are used to install casing within wellbores.

Abstract: An oxide including indium (In), gallium (Ga) and zinc (Zn), wherein diffraction peaks are observed at positions corresponding to incident angles (2?) of 7.0° to 8.4°, 30.6° to 32.0°, 33.8° to 35.8°, 53.5° to 56.5° and 56.5° to 59.5° in an X-ray diffraction measurement (CuK? rays), and one of diffraction peaks observed at positions corresponding to incident angles (2?) of 30.6° to 32.0° and 33.8° to 35.8° is a main peak and the other is a sub peak.

Abstract: Disclosed are pieces that are produced by sintering, which have well-differentiated surface finish areas including rough areas resulting from the sintering process, the roughness being determined by the size of grain used in sintering, and polished areas that have undergone a three-dimensional machining process. Also, dislosed is a method that, after obtaining a file containing a representation of the piece to be produced, comprises: selecting the parts to be raised; producing the piece by means of sintering; and subsequently subjecting the piece to automatic, semi-automatic or directed programming generation so that, by means of machining, the raised parts are reduced. Consequently, the resulting piece is economical in terms of costs and exhibits a very high degree of precision in the machined areas, a tolerance 9, and improved finish, texture and finishing in the sensitive areas of the piece.

Abstract: Methods of producing a dental product are disclosed. Certain methods include the steps of providing a pre-sintered blank made from a green body of ceramic material, performing a machining operation on the blank, and subsequently sintering the blank to its final density in a sintering operation performed at a temperature in the range of 1300° C. to 1650° C. The pre-sintered blank that is provided may have a strength in the range of 53-107 MPa.

Abstract: A material includes a ceramic material having a general formula of Pb1-(m/2)x-z+zMmx (Zr1-yTiy-z+z)O3+a-zPbTiO3, where M is at least one element selected from: Nd, La, Ba, Sr, Sb, Bi, K, Na; where: 0?x?0.1, 0.3?y?0.7; 0?z?y, 0?(a-z) ?0.03; and where m corresponds to a valency of a metal M, and has a value +1, +2 or +3.

Abstract: A ready-for-use ceramic produced by sintering a blank and comprising an upper and a lower face, both of which have a support surface for mounting in a clamp mounting of a cutting tool, lateral faces connecting the upper and lower faces, and cutting edges which have chamfers.

Abstract: Ceramic dielectric materials that can be utilized as electronic components, such as dielectric resonators are disclosed. The material can have a formula Ba12M?(28+a/3)Ti(54?a-b)M?aGebO162, wherein M? is at least one rare earth element selected from the group consisting of lanthanum, neodymium, samarium, gadolinium, and yttrium, M? is at least one element selected from the group consisting of aluminum, gallium, chromium, indium, scandium, and ytterbium, 0?a?6, and 0?b?3. The ceramic dielectric material can also have a formula Ba12M?(28+2x/3)Ti(54?x?y)M??xGeyO162, wherein M? is at least one rare earth element selected from the group consisting of lanthanum, neodymium, samarium, gadolinium, and yttrium, M?? is at least one metal selected from the group consisting of magnesium, zinc, nickel, and cobalt, 0?x?3, and 0?y?3. One or more aspects of the present invention pertain to methods of fabricating a dielectric component. Methods of synthesizing the disclosed ceramic dielectric materials are also disclosed.

Abstract: A system for processing materials includes handling and cutting stations positioned at appropriate positions along first and second conveying portions. A crust cutting station is positioned along the first conveyor portion. A crust removal station is positioned to span across the first and second conveying portions. Similarly, a stacking station is also positioned to span across the first and second conveying portions. Further, a first (vertical) cross cutting station is position along the second conveyor portion. Similarly, a second (horizontal) cross cutting station is located along the second conveyor portion. The process of using the disclosed system eliminates the need for specially designed stacking frames or trays and support rods, and improves cutting capacity and reduces processing time by only stacking the materials to be processed once, without de-stacking and restacking steps.

Abstract: A method of drilling holes in a component made of a ceramic matrix composite with a laser beam. The method includes: a percussion first step during which an initial hole having an initial diameter and a hole axis is drilled; a trepanning second step during which an intermediate hole, coaxial with the initial hole and having a larger diameter than that of the initial hole, is drilled by shifting the laser beam and then making it rotate about the hole axis; and a third step during which the focal point of the laser beam is moved along the hole axis and then pulses are triggered, to obtain a final hole.

Abstract: A silicon nitride substrate having appropriately adjusted warpage and surface roughness can be obtained by mixing magnesium oxide of 3 to 4 wt % and at least one kind of rare-earth element oxide of 2 to 5 wt % with silicon nitride source material powder to form a sheet-molded body, sintering the sheet-molded body, and performing a heat treatment at a temperature of 1,550 to 1,700 degree C. with a pressure of 0.5 to 6.0 kPa with a plurality of substrates being stacked. Also, a silicon nitride circuit board and a semiconductor module using the same are provided.

Abstract: The present invention relates to producing ceramic targets, which serves as a material source for magnetron, electron-beam, ion-beam and other film applying methods in micro-, opto-, nano-electronics. The aim of the proposed invention is to reduce the doping level of ceramics by non-controllable impurities, to increase a ceramic density and to improve performance characteristics of ceramic targets. In the method for synthesizing the ceramics doped by a low-melting metal consisting in that a mixture of components is pressed and sintered; as a doping additive, the mixture of components contains a low-melting metal and the surface of the main component particles is covered and moistened prior to pressing by the doping metal layer by grinding the mixture of the components. The grinding can be carried out at a melting temperature of the low-melting metal.

Abstract: A ceramic member with high strength grooves and method of manufacturing same is disclosed. A heat ray may be used in combination with a blown gas to form grooves in the surface of the ceramic member while eliminating or minimizing depletion of a sintering aid. A high concentration of the sintering aid is formed in a surface region of the ceramic member extending a distance from the surface of the grooves into the ceramic member.

Abstract: The invention relates, inter alia, to a method for the production of a ceramic shaped body (22), comprising the following steps: production or provision of a green body (10) having a structured surface region (12), irradiation of at least the structured surface region (12), so that the green body (10) is consolidated in the region of a volume zone (16) including the structured surface region (12), but is not consolidated or is consolidated to only a lesser degree in volume zones further from the surface, separation of the consolidated volume zone (16) including the structured surface region (12) from parts of the green body (10) which have not been consolidated or have been consolidated to only a lesser degree, and optionally scouring of the consolidated volume zone (16) obtained in this way.

Abstract: The present invention relates to a surface treatment process for ceramic mechanical seal rings of pumps, of the type comprising a first cold-moulding process of the ceramic powders in a suitable die and a second sintering process of the ring, characterised in that the moulding process is performed with a punch with head provided with a plurality of punctiform micro-projections; another object of the present invention is the seal ring obtained with the said process.

Abstract: In the production of a ceramic substrate (1) with a level difference (3), a surface of a fired substrate obtained by firing of a ceramic green sheet is honed to form the level difference (3). Alternatively, a level difference is first formed through processing of a ceramic green sheet, laminating of a ceramic green sheet, or the like, and thereafter the ceramic green sheet is fired to obtain a fired substrate (ceramic substrate) (1) with a level difference (3).

Abstract: A cemented carbide cutting tool insert/button for mining and construction comprising hard constituents in a binder phase of Co and/or Ni and at least one surface portion and an interior portion in which surface portion the grain size is smaller than in the interior portion is disclosed. The surface portion with the smaller grain size has a lower binder phase content than the interior portion. A method to form the cemented carbide cutting tool insert/button is also disclosed.

Abstract: Disclosed is a shower plate which is formed with a large number of process-gas blowing holes having a simple structure, high machinability and high dimensional accuracy without the risk of unevenness in blowing of a process gas and outbreak of particles, while ensuring constant quality and interchangeability. Through a press forming process, a powder for a ceramic material with a low dielectric constant is formed into a disc-shaped compact having dimensions determined in consideration of a sintering shrinkage value and a machining value. A gas inlet passage 3 and a large number of blowing holes 2 for a compact stage are bored in the disc-shaped compact, and then the disc-shaped compact is sintered. Subsequently, the gas inlet passage 3 and a main hole portion 2b in each of the blowing holes are subjected to grinding to have a surface roughness of Is or less.

Abstract: The invention is a method for producing a piezo actuator starting with the assembly of a plurality of actuator layers made of a ceramic material and a plurality of metallic layer electrodes disposed between the actuator layers to form a green member. The metallic layer electrodes are alternately electrically connected a respective terminal electrode via which a voltage can be applied to the layer electrodes. The terminal electrode extends within the piezo actuator through respective longitudinal bores. The piezo actuator has an end face and an opposing base. According to the inventive production method, the terminal electrode protrudes from the end face of the green member. The green member is heated until the sintering process has been completed, during which the end of the terminal electrode that protrudes from the end face is supported such that the green member is not deformed during the sintering process.

Abstract: A method of manufacturing a hybrid structure (100) having a layer of CMC material (28) defining an interior passageway (24) and a layer of ceramic insulating material (18) lining the passageway. The method includes the step of casting the insulating material to a first thickness required for effective casting but in excess of a desired second thickness for use of the hybrid structure. An inner mold (14) defining a net shape desired for the passageway remains in place after the casting step to mechanically support the insulating material during a machining process used to reduce the thickness of the insulating material from the as-cast first thickness to the desired second thickness. The inner mold also provides support as the CMC material is deposited onto the insulating material. The inner mold may include a fugitive material portion (20) to facilitate its removal after the CMC material is formed.

Abstract: A molded body cutting apparatus according to the present invention comprising a first conveyer member that conveys an extrusion-molded pillar-shaped ceramic molded body a cutting member that moves in a direction parallel to a movement direction of the above mentioned first conveyer member while moving also in a vertical direction, and cuts the above mentioned ceramic molded body to a predetermined length by passing through the interior of the above mentioned ceramic molded body and a second conveyer member that conveys a cut ceramic molded body cut to a predetermined length by the above mentioned cutting member, wherein a conveyance speed of the above mentioned first conveyer member and a movement speed of the above mentioned cutting member in the above mentioned parallel direction are almost the same, before the above mentioned ceramic molded body is cut, and each of the conveyance speed of the above mentioned first conveyer member, the movement speed of the above mentioned cutting member in the above mentio

Abstract: The spark plug manufacturing apparatus includes a holding plate formed with a plurality of mounting holes penetrating from a front surface to a rear surface thereof for holding therein hollow tubular insulators of spark plugs, each of which is fitted therein with a center electrode and a metal stem provided with a terminal part, and is charged with a powder resistance material between the center electrode and the stem, and an electric furnace for heating the insulators held in the mounting holes of the holding plate. The holding plate is made of a ceramic material containing not less than 50 wt % of silicon nitride.

Abstract: The present invention relates to a method for making an ablation transducer having a plurality of helical elements that can be operated out of phase to orient the acoustical energy beam forward or backward in the longitudinal direction. The transducers includes a cylindrical inner electrode, a cylindrical piezoelectric material disposed over the inner electrode, and a cylindrical outer electrode disposed over the cylindrical piezoelectric material. Spiral grooves are cut through at least the outer electrode separating the transducer into a plurality of functionally discrete helical transducer segments. The helical transducer segments can be operated independent from one another. An array of intertwined helical transducers arranged linearly along a helical axis are also contemplated.

Abstract: The invention relates to a process for the production of ceramic bearing components in which a mixture of a metallo-organic compound and a chemically reactive filling substance is subjected to a pyrolysis reaction and the resulting product.

Abstract: A substrate processing chamber component demonstrates reduced erosion in an energized gas. The component has a ceramic structure composed of aluminum oxide with a surface exposed to the energized gas in the chamber. The erosion of the surface by the energized gas is substantially reduced by erosion resistant properties of the ceramic structure, which arise from a ratio of the total area of the grains GSA to the total area of the grain boundary regions GBSA in the ceramic structure of from about 0.25 to about 2.5. Also, at least about 80% of the grains in the ceramic structure have a grain size in the range of from about 1 micron to about 20 microns. The ceramic structure also has a purity of at least about 99.8% by weight to further reduce erosion of the surface.

Abstract: A combinatorial library includes a gelcast substrate defining a plurality of cavities in at least one surface thereof; and a plurality of gelcast test materials in the cavities, at least two of the test materials differing from the substrate in at least one compositional characteristic, the two test materials differing from each other in at least one compositional characteristic.

Abstract: This invention provides a production method of a ceramic body that can use waste and defectives generated during a production process. The invention includes a dust removal step of removing dust below a predetermined particle size from granulated powder in a slurry, a molding step of molding the slurry containing granulated powder into a primary molded body, a cutting step of cutting the resulting primary molded body into a non-sintered molded body having a desired shape, a deflocculation step of deflocculating the dust removed in the dust removal step so that at least 50 wt % of particles having a particle size of not greater than 5 ?m are contained, and mixing water to obtain a regenerated slurry, and a step of molding a non-sintered molded body from at least the regenerated slurry so obtained, and sintering it to obtain a ceramic body.

Abstract: Methods and compositions are provided for making low temperature sintering ceramic bodies that have very low thermal expansion and low porosity.

Abstract: A ceramic sheet has a burr height on the periphery of the sheet of ±100 ?m or less and/or a dimple height on the sheet surface of 100 ?m or less, as determined by irradiating the sheet with a laser beam to measure reflected light, and three-dimensionally analyzing the reflected light with a laser optical three-dimensional profiling instrument. This sheet is highly resistant to stacking-induced loads and thermal stresses. Further, when the ceramic sheet includes a zirconia ceramic partially stabilized with 2.8 to 4.5% by mole of yttria and containing 0.1 to 2% by mass of at least one dispersed reinforcing oxide, in which the grain size of the surface of the sheet has an average of 0.1 to 0.4 ?m, a maximum of 0.4 to 0.8 ?m, and a coefficient of variation of 30% or less, which grain size is determined by scanning electron microscopic observation, the ceramic sheet has satisfactory strength at room temperature and at high temperatures and satisfactory durability of strength at high temperatures.

Abstract: When a sintered body of ceramic is shot-blasted at normal temperatures to plastically deform the crystal structure of the shot-blasted surface to apply residual stress and is heat-treated to recrystallize fine cracks, dislocated cells in the grain boundary are formed, crystals are finely divided, and the fracture toughness is significantly improved. When the sintered body of ceramic is a thin product, an effective toughening can be attained by shot blasting both the front and back sides. After heat treatment, mechanical strength is significantly improved by removing a part of the modified surface layer by an abrasion treatment.

Abstract: The invention relates to an elastomer-bonded sheet material encompassing vulcanized elastomer content and content composed of at least one filler bonded therein, where the vulcanized elastomer content encompasses, based on the entire elastomer content, from about 25 to 70% by weight, preferably from about 40 to 60% by weight, of at least one vulcanized elastomer which in the unvulcanized state has not more than 10%, preferably not more than 7%, of unsaturated carbon double bonds in the main chain.

Abstract: A method for making a dental restoration by milling a dental model from a partially sintered ceramic material, applying dental material thereon, and curing the dental material on the model to obtain a dental restoration. The method can be used for forming a variety of dental restorations including, but not limited to, crowns, bridges, space maintainers, tooth replacement appliances, orthodontic retainers, dentures, posts, jackets, inlays, onlays, facings, veneers, facets, implants, abutments, splints, partial crowns, teeth, cylinders, pins, and connectors.

Abstract: A method for manufacturing ceramic pieces with perforations comprising pressing wet powder (4) into a mold (1) from which a ceramic covering piece will be obtained. A flat body (7) that is later dried and baked is obtained with the pressing and hence, the ceramic piece is obtained. One or several perforations (8) may be made during the pressing process so that the flat powder body (7), so that the ceramic piece resulting from baking the flat powder body includes the perforation or perforations (8) that can be used for inserting or passing the elements for fastening the ceramic piece to a face. The perforations (8) are made with perforating punches (6) embedded in the pressing tamper (3) of the mold (1) and partially emerging in order to be inserted during pressing in the powder mass (4′), producing the corresponding perforations (8). The powder (4″) of each perforation is contained unpressed in the perforating punch (6) and is emptied once the pressing operation has finished.

Abstract: A method for manufacturing a sensing element is provided, in particular for determining the oxygen content in exhaust gases of internal combustion engines, a composite construction having at least one ceramic paste (green film) present in film form being sintered to yield the sensing element, and sharp edges of the sensing element being blunted before sintering to increase the thermal shock resistance of the sensing element.

Abstract: A process for making a heat treated ground ceramic cutting tool and the resultant cutting tool. The process includes the steps of: providing an uncoated ground ceramic cutting tool having at least a portion thereof ground; and heat treating the uncoated ground ceramic cutting tool so as to form the heat treated ground ceramic cutting tool.

Abstract: In a method of manufacturing a friction member used for a vibration wave driving apparatus including a vibration member, a contact member which is brought into frictional contact with the vibration member and relatively moved by vibrations produced in the vibration member, and the friction member formed on one of friction portions of the vibration member and contact member, a molded member is formed by compression molding of a plastic powder and an additive, a sintered member is formed by sintering the molded member, a sheet is formed by cutting the sintered member in the form of a sheet, and a modified layer formed by cutting is removed from the friction surface of the sheet.